The talk about context functions I gave at the EclipseCon Europe 2012 in Ludwigsburg.

1. Eclipse 4 Context Functions
Sopot Çela

2. About Me
Work for the International
Criminal Investigative
Training Assistance Program
(ICITAP)
Independent Eclipse e4
committer
Platform/UI contributor
Tweet at @smcela

3. Eclipse 4 context
KEYS VALUES
EPartService PartServiceImpl
EModelService ModelServiceImpl
MyCoolService CoolServiceImpl

4. Eclipse 4 context hierarchy
OSGi MApplication
MWindow MWindow
MPart
MPart MPart
@Inject
EPartSer vice

5. Making a point
@Inject EPartService will get you a certain service implementation
PartServiceImpl

6. Making a point
@Inject EPartService will get you a certain service implementation
PartServiceImpl

7. Making a point
@Inject EPartService will get you a certain service implementation
PartServiceImpl
IN A GIVEN
CONTEXT
Impl = f(context, Interface)
Context Function

8. The guts of Eclipse
A simple context function
This is how you get your
@Inject EHandlerService

9. The guts of Eclipse
A simple context function
This is how you get your
@Inject EHandlerService

10. The curious case of
EPartService @Inject
EPartService

11. DEMO 1
IEmergencyService with only one method dispatch()
Police implementation dispatches police car
Ambulance implementation dispatches ambulance
Firefighters implementation dispatches firefighters

12. DEMO 2
IConverterService with one method
convertToFahrenheit
Two implementations call one different remote web
service each to do the conversion
The context function will
Distribute the calls evenly ( mini load balancer )
Pick the other if one is down ( mini fail over)

13. Acknowledgment
The JavaFX renderers provided by Tom Schindl
from his efxclipse project.